Comparison of Sigma 28mm ƒ/1.8 EX DG Aspherical Macro and Sigma 30mm ƒ/1.4 DC HSM Art

Attribute	Sigma 28mm ƒ/1.8 EX DG Aspherical Macro ×	Sigma 30mm ƒ/1.4 DC HSM Art ×
Filter Size (mm)	77	62
Notes	Available AF Mounts: Sigma, Canon, Nikon, Minolta, Pentax	Available AF mounts: Sigma, Canon, Nikon. Included Accessories: case, petal type lens hood (LH686-01).
Closest Focus (m)	0.2	0.3
Magnification Ratio (x)	0.34	0.15
Type	Wide Prime	Standard Prime
Focus Details	Internal with Dual Focus mechanism	Rear focusing system with HSM (Hyper Sonic Motor)
APS Equivalent	1.5x: 42mm; 1.6x: 44.8mm	1.5x: 45mm; 1.6x: 48mm
Diameter (mm)	83.6	74.2
Image Circle	35mm	Image Circle
Focal Length (mm)	28.00	30.00
Brand	Sigma	Sigma
Name	Sigma 28mm ƒ/1.8 EX DG Aspherical Macro	Sigma 30mm ƒ/1.4 DC HSM Art
Weight (g)	500	435
Aperture (f)	1.80 - 22.00	1.40 - 16.00
Diaphragm Blades	9	9
Diagonal Angle of View (degree)	75.40	50.70
Length (mm)	82.5	63.3
Diaphragm Blades Type	-	rounded
Lens Construction	10 elements in 9 groups, including 2 aspherical elements	9 elements in 8 groups, including 1 aspherical element, Super Multi-Layer Coating